JP2011052478A - Connector and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the productivity of a connector and reduce environmental loads in a production process. <P>SOLUTION: A chain 14, which is constituted of five rings linked crosswise and entirely applied with rust preventive plating, is berried in the rubber body 12 of the connector 10. Connecting portions 25 as the portions to be connected to a connecting object in a third ring 14C are exposed from the rubber body 12. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a connector for connecting two members and a method for manufacturing the same.

  Conventionally, as a connecting tool for connecting two members, for example, as in Patent Document 1, a chain is embedded in an elastic body curved in a substantially V shape in a side view along the shape of the elastic body. In addition, there is known a connector in which the end of the chain is exposed from an elastic body.

JP-A-2005-326022

  However, in the connector as in Patent Document 1, the anticorrosion coating is applied several times in order to prevent the chain portion exposed from the elastic body from being rusted. Alternatively, only the portion exposed from the elastic body of the chain is plated for anticorrosion.

  For this reason, in the coupling tool as in Patent Document 1, only the portion exposed from the elastic body of the chain is subjected to anticorrosion coating or plating for anticorrosion several times, so that the manufacturing process becomes complicated and the productivity is good. Absent. Also, since organic solvents are used for painting, there is an environmental burden.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a coupler and a coupler manufacturing method that can improve productivity and have a low environmental load in the manufacturing process.

  According to a first aspect of the present invention, there is provided a connecting tool having a curved elastic body and a rust-preventive plating that is entirely embedded in the elastic body and exposed from both ends of the elastic body. And a chain linked to.

  A chain that is entirely plated for rust prevention is embedded in the elastic body. For this reason, the troublesome work of performing anticorrosion coating several times on the connecting portions exposed from both ends of the elastic body in the chain is eliminated, and the productivity can be improved. Moreover, since no organic solvent is used in the manufacturing process, the environmental load is small.

  According to a second aspect of the present invention, in the connector according to the first aspect, the plating is any one of zinc plating, alloy plating of zinc and aluminum, and alloy plating of zinc, aluminum and magnesium.

  A chain plated with any one of zinc plating, zinc-aluminum alloy plating, and zinc-aluminum-magnesium alloy plating is embedded in the elastic body. For this reason, the troublesome work of performing anticorrosion coating several times on the connecting portions exposed from both ends of the elastic body in the chain is eliminated, and the productivity can be improved.

  According to a third aspect of the present invention, there is provided a method of manufacturing a connector according to a third aspect of the present invention, comprising: a plating step for plating the entire chain for rust prevention; and an elastic body obtained by bending the chain plated in the plating step, And a burying step of embedding the connecting portion exposed from both ends of the elastic body.

  In the plating process, the entire chain is plated for rust prevention. In the embedding step, the chain plated in the plating step is embedded in the elastic body in a state where the connecting portions connected to the connection object are exposed from both ends of the elastic body. For this reason, the troublesome work of performing anticorrosion coating several times on the connecting portions exposed from both ends of the elastic body in the chain is eliminated, and the productivity can be improved. Moreover, since no organic solvent is used in the manufacturing process, the environmental load is small.

  As described above, the connector of the present invention according to claim 1 has an excellent effect that productivity can be improved and environmental load in the manufacturing process is small.

  The connector according to the second aspect of the present invention has an excellent effect that productivity can be improved.

  The manufacturing method of the connector according to the third aspect of the present invention has an excellent effect that productivity can be improved.

It is a perspective view which shows the coupling tool which concerns on 1st Embodiment of this invention. (A) is a side view which shows the coupling tool which concerns on 1st Embodiment of this invention, (B) is a top view which shows the coupling tool which concerns on 1st Embodiment of this invention. (A) is a side view which shows the state which connected the girder with the connector which concerns on 1st Embodiment of this invention, (B) is the state which connected the girder with the connector according to 1st Embodiment of this form. FIG. It is a graph which shows the relationship between the load and displacement amount of a connector which concern on 1st Embodiment of this invention. (A) is a side view which shows the coupling tool which concerns on 2nd Embodiment of this invention, (B) is a top view which shows the coupling tool which concerns on 2nd Embodiment of this invention. It is a side view which shows the coupling tool which concerns on 3rd Embodiment of this invention. It is a side view which shows the coupling tool which concerns on 4th Embodiment of this invention. It is a side view which shows the coupling tool which concerns on 5th Embodiment of this invention.

  A first embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of the connector of this embodiment. FIG. 2 (A) shows the connector of this embodiment in a side view, and FIG. 2 (B) shows the connector of this embodiment in a plan view. 3A is a side view showing a state in which the beams are connected by the connector of the present embodiment, and FIG. 3B is a state in which the beams are connected by the connector of the present embodiment. It is shown in plan view.

  As shown in FIGS. 1-3, the coupling tool 10 of this embodiment is a bridge | bridging fall prevention tool, Comprising: The cross section is circular and it has the rubber body 12 as an elastic body curved in substantially V shape by side view. Yes. In the rubber body 12, a chain 14 formed by crossing and linking five rings is embedded along the shape of the rubber body 12. The first ring 14A at the center in the longitudinal direction is located on the straight portion 12A of the rubber body 12, and the second ring 14B located on the inclined portion 12B of the rubber body 12 has an angle θ on the first ring 14A. Linked.

  A gap a is provided at the intersection between the first ring 14A and the second ring 14B, and a gap b is formed between the ends of the second ring 14B. The third ring 14C is linked to the second ring 14B. The third ring 14 </ b> C is raised from the rubber body 12 in parallel with each other, and a connecting portion 25 which is a portion (substantially upper half in the present embodiment) connected to the bracket 22 of the girder 16 serving as a connection object, The rubber body 12 is exposed.

  For convenience of explanation, the expression “gap” is used, but these gaps are naturally filled with rubber and integrated with the rubber body 12. Here, a buffer layer can be obtained by changing the material such as embedding a reinforcing layer (for example, a fiber layer) in the rubber body of the gap or making the rubber body of the gap different from the elastic modulus of other rubber bodies. Function can be increased or decreased. Moreover, the cross-sectional shape of the rubber body 12 is not limited to a circle, and may be an ellipse or a polygon.

  In the present embodiment, the entire chain 14 is plated for rust prevention.

  More specifically, zinc, a zinc-aluminum alloy, zinc-aluminum alloy are formed on the entire (total surface) of all five rings of the first ring 14A, the second ring 14B, and the third ring 14C constituting the chain 14. Rust prevention plating of any one of the alloy of magnesium and magnesium is given.

  An adhesive for bonding the rubber body 12 and the chain 14 is not applied to the portion of the chain 14 embedded in the rubber body 12. For this reason, the chain 14 is embedded in the rubber body 12 without adhesion.

  As shown in FIG. 3A, the beams 16 are connected to each other by the connector 10 of this embodiment. In addition, the girder 16 connected by the connector 10 is spanned between the support 18 installed in the bridge pier 20 and the adjacent pier 20 (not shown), respectively. Moreover, the girder 16 and the bridge pier 20 may be connected by the connector 10 of this embodiment.

As shown in FIG. 3 (B), the connector 10 of the present embodiment is configured to be connected by a pin 24 to a bracket 22 protruding from the side surface of the beam 16.
The girder 16 is bridged with a predetermined gap so that the girder does not collide due to a temperature change or the like, and the connector 10 prevents the girder 16 from falling due to the shaking of the pier 20 during an earthquake. The digits 16 are connected to each other.

(Manufacturing method of coupling tool)
Next, the manufacturing method of the coupler 10 which concerns on this form is demonstrated.

  In the present embodiment, first, in the plating step, the entire chain 14 is plated with rust for any one of zinc, an alloy of zinc and aluminum, and an alloy of zinc, aluminum and magnesium.

Next, in the embedding process, the chain 14 that is entirely plated is connected to the rubber body 12 in a state in which the connecting portions 25 that are connected to the brackets 22 of the girders 16 to be connected are exposed from both ends of the curved rubber body 12. Embed in.
More specifically, in the embedding process, the lower die, the rubber on the lower side in the short direction of the chain 14, the rubber on the upper side in the short direction of the chain 14, the chain 14 and the upper die are set and pressed in this order. Vulcanize.

(Function and effect)
Next, the operation of the connector 10 according to this embodiment will be described.

In the present embodiment, the entire chain 14 is plated for rust prevention in the plating process of the connector 10 manufacturing process, and the entire chain 14 is embedded in the rubber body 12 in the embedding process. For this reason, the complicated operation | work which performs the coating for anticorrosion several times to the connection part 25 exposed from the both ends of the rubber body 12 in the chain | strand 14 is lose | eliminated, and productivity can be improved.
Further, an adhesive for adhering the rubber body 12 and the chain 14 is not applied to the portion of the chain 14 embedded in the rubber body 12. For this reason, the process of apply | coating an adhesive agent to the part embedded in the rubber body 12 of the chain | strand 14 performed conventionally is unnecessary. As a result, productivity can be further improved.

  Further, in the present embodiment, when the pier 20 is shaken and a force in the direction of arrow A in FIG. 2 acts on the connector 10 during an earthquake or the like, the third rings 14C tend to be separated from each other. For this reason, the angle θ of the rubber body 12 is reduced, a bending resistance force is generated, and a buffer function for pulling back the girder 16 by the elastic force and shape characteristics of the rubber body 12 works. At this time, since the rubber in the gap a is compressed, the cushioning function is also exerted by the rubber filled between the first ring 14A, the second ring 14B, and the third ring 14C.

  On the other hand, when the girder 16 approaches and a force in the direction opposite to the arrow A acts on the connector 10, the third rings 14C try to approach each other. For this reason, the angle θ of the rubber body 12 is increased, a bending resistance force is generated, and a buffer function for separating the beam 16 by the elastic force and shape characteristics of the rubber body 12 works. At this time, the rubber in the gap b is compressed, and the cushioning function is also exerted by the rubber filled between the first ring 14A, the second ring 14B, and the third ring 14C.

  At this time, in this embodiment, the portion of the chain 14 embedded in the rubber body 12 is not bonded to the rubber body 12. Therefore, due to the displacement shown in the direction of arrow A in FIG. 2, the first load acting on the connector 10 does not cause the bond between the chain 14 and the rubber body 12 to be peeled off, resulting in stable buffer characteristics.

  As a result, in the present embodiment, as shown in the graph of FIG. 4, the first load F <b> 1 acting on the connector 10 by the displacement L in the direction of arrow A in FIG. 2, and the subsequent direction of arrow A in FIG. 2. Due to this displacement, the difference between the rising characteristics of the second load F2 and the third load F3 acting on the connector 10 is reduced.

  In addition, in a conventional connector that uses an unplated non-plated chain, an adhesive is applied after blasting the non-plated chain, and then the rubber body is vulcanized and bonded. Adhesive was not applied to the exposed connecting portion, and coating using an organic solvent was performed after vulcanization. For this reason, in the connection tool 10 of the present embodiment using the plated chains 14, since the organic solvent is not used in the manufacturing process, the environmental load is small and the manufacturing process and the management man-hour can be reduced. Improves.

  Moreover, in the connector 10 of this embodiment, since the portion of the chain 14 embedded in the rubber body 12 is also plated, the portion of the chain 14 embedded in the rubber body 12 is affected by the action of a tensile load or the like. Even when exposed, the exposed portion can be prevented from rusting.

  Moreover, in the connector 10 of this embodiment, the part embedded in the rubber body 12 of the chain 14 is not bonded to the rubber body 12. For this reason, separation of the chain 14 and the rubber body 12 is facilitated, and recycling is easy.

[Other Embodiments]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.
For example, as in the second embodiment shown in FIGS. 5A and 5B, a chain 30 composed of seven rings is embedded in a substantially U-shaped rubber body 28 to cope with a large amount of displacement. It is good also as a structure which plated the chain | strand 30 of the connector 26 made possible.

  Further, as in the third embodiment shown in FIG. 6 and the fourth embodiment shown in FIG. 7, when the girder spacing is narrow, it is configured by three rings to the block-like rubber bodies 36 and 38 having a low degree of curvature. It is good also as a structure which plated the chain 40 of the coupling tools 32 and 34 in which the chain | strand 40 was embedded.

  Further, as in the fifth embodiment shown in FIG. 8, it is possible to adopt a configuration in which the chain 44 of the coupling tool 42 embedded in the rubber body 12 is plated without providing a gap in the coupling portion of the ring constituting the chain 44.

  The chain 14 may be plated by rust prevention other than zinc plating, alloy plating of zinc and aluminum, or alloy plating of zinc, aluminum and magnesium.

  Moreover, although the rubber body 12 as an elastic body was used in each said embodiment, you may use elastic bodies other than a rubber body.

  Moreover, the connection tool of this invention is not limited to the bridge | bridging fall prevention tool which connects the girder 16 and the girder 16 or the girder 16 and the bridge pier 20, but is applicable also to the connection tool which connects another connection object.

DESCRIPTION OF SYMBOLS 10 Connector 12 Rubber body 14 Chain 14A Ring 14B Ring 14C Ring 16 digit (object to be connected)
25 Linking part of the ring 26 Connecting tool 28 Rubber body 30 Chain 32 Connecting tool 34 Connecting tool 36 Rubber body 38 Rubber body 40 Chain 42 Connecting tool 44 Chain

Claims (3)

A curved elastic body;
Anti-corrosion plating is applied to the whole, and the chains that are embedded in the elastic body and exposed from both ends of the elastic body are respectively connected to the objects to be connected;
Having a connector.   The connector according to claim 1, wherein the plating is any one of zinc plating, alloy plating of zinc and aluminum, and alloy plating of zinc, aluminum, and magnesium. A plating process for plating the entire chain for rust prevention;
An embedding step of embedding a connecting portion to be connected to an object to be connected in an exposed state from both ends of the elastic body in a curved elastic body plated with the plating step;
The manufacturing method of the coupling tool containing this.

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